Smart RFI Detector ®

In order to fix your RFI from your radio HF station, you must to be able to see it.

Check and see with your eyes if RFI is present, with Smart RFI Detector® :

This ultra-sensitive pocket-gadget helps you to find out easily, if you have RFI or I3 in your HF station.

Your HF antennas should be 100% isolated from your TX using an appropiate current balun (RF choke). This applies to verticals, dipoles and wire antennas.

All cables coming from near your antennas give you RFI problems in your radio shack. Check this invisible RFI with the Ultimate RFI Detector and remove it with the correct ferrite cores or RF choke.

Some examples of RFI traveling on the coax shield to your radio shack. Poor choke insulation in the 20m band. The rest of the bands are OK. No RFI returns